- Subjects who did not use the following medicines before inclusion: topical corticosteroids or other therapies to dermatitis (30 days); oral corticosteroids (180 days); parenteral corticosteroids (180 days); immunomodulators/immunosuppressor (30 days); any drug under investigation (1 year); any therapy for the studied clinical conditions (180 days); keratolytic agents (30 days); emollient agents (30 days); tazarotene (30 days); vitamin D (topical or oral, 30 days); methotrexate (30 days); acitretin (2 years); UV light (30 days); PUVA therapy (30 days).